SAR is a widely used technique to acquire images for geoscience and earth observation applications. Active phased array antennas are commonly used in spaceborne SAR systems. For certain modes and applications, it is necessary to know the phase behavior of these phased array antennas. For applications utilizing the different polarization channels for interferometry, the phase difference between the polarizations needs to be calibrated very accurately as it is the main evaluation parameter. Also for single-pass interferometric missions, the difference between the two antennas in terms of phase gradients is of major importance. This paper demonstrates for the first time the usage of phase patterns in an operational interferometric SAR mission. It describes why these phase patterns are required and how they are used to fulfill the different goals of the missions. Then, the mathematical model to derive the phase of the antenna patterns is shown. Finally, the paper explains how the antenna patterns are calibrated in order to minimize their residual errors and describes in detail the measurements performed for this calibration and verification.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Phase Pattern Calibration for Interferometric Applications in Spaceborne SAR Systems




    Publication date :

    2013


    Size :

    8 Seiten, 22 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Antenna pattern modeling and calibration for spaceborne SAR systems

    Bachmann, Markus / Karlsruher Institut für Technologie | SLUB | 2016


    Collision Risk Analysis for Spaceborne Interferometric SAR Systems

    Lewis, H.G. / Swinerd, G.G. / Channer, S.E. | AIAA | 2004


    An Adaptable Deep Learning Model for Ionospheric Pattern Analysis on Spaceborne Interferometric SAR Systems

    Massinas, Basil A. / Doulamis, Anastasios / Doulamis, Nikolaos et al. | AIAA | 2018


    A Workstation for Spaceborne Interferometric SAR Data (Abstract)

    Van der Kooij, M. W. A. | British Library Online Contents | 1997


    Instrument calibration of spaceborne SAR systems

    Bräutigam, Benjamin | TIBKAT | 2014